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Science with the Cherenkov Telescope Array

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ISBN: 9789813270091 Year: Pages: 364 DOI: 10.1142/10986 Language: English
Publisher: World Scientific Publishing Co.
Added to DOAB on : 2019-01-23 03:35:14
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This book summarizes the science to be carried out by the upcoming Cherenkov Telescope Array, a major ground-based gamma-ray observatory that will be constructed over the next six to eight years. The major scientific themes, as well as core program of key science projects, have been developed by the CTA Consortium, a collaboration of scientists from many institutions worldwide.CTA will be the major facility in high-energy and very high-energy photon astronomy over the next decade and beyond. CTA will have capabilities well beyond past and present observatories. Thus, CTA's science program is expected to be rich and broad and will complement other major multiwavelength and multimessenger facilities. This book is intended to be the primary resource for the science case for CTA and it thus will be of great interest to the broader physics and astronomy communities. The electronic version (e-book) is available in open access.

Radio Galaxies at TeV Energies

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ISBN: 9783039287505 / 9783039287512 Year: Pages: 188 DOI: 10.3390/books978-3-03928-751-2 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Physics (General) --- Astronomy (General)
Added to DOAB on : 2020-06-09 16:38:57
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It is common believe that the centers of all galaxies exhibit supermassive black holes with masses ranging from millions up to billions of the mass of our Sun. By accreting surrounding matter, the luminosity of these galactic nuclei can outshine the emission of their host galaxies. If this is the case, they are called active galactic nuclei. Some of these objects eject powerful outflows composed of plasma, called jets. These jets can produce non-thermal radiation which observable across the entire electromagnetic spectrum from radio up to the gamma-ray frequencies. At highest frequencies (TeV range) most of the detected active galaxies have jets directed along or close to the line of sight. However, also galaxies with larger angles to the line of sight showing fascinating features were discovered, in seeming contradiction to traditional models for these so-called radio galaxies. Thus, the latter are of particular importance for understanding active galactic nuclei in general. This Special Issue contains reviews and research articles about the current knowledge of radio galaxies at TeV energies, including observational results and theoretical models. It is intended to guide the interested reader deeper into this fascinating discipline of modern day astronomy.

The Role of Halo Substructure in Gamma-Ray Dark Matter Searches

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ISBN: 9783039360444 / 9783039360451 Year: Pages: 220 DOI: 10.3390/books978-3-03936-045-1 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Physics (General) --- Astronomy (General)
Added to DOAB on : 2020-06-09 16:38:57
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An important, open research topic today is to understand the relevance that dark matter halo substructure may have for dark matter searches. In the standard cosmological model, halo substructure or subhalos are predicted to be largely abundant inside larger halos, for example, galaxies such as ours, and are thought to form first and later merge to form larger structures. Dwarf satellite galaxies—the most massive exponents of halo substructure in our own galaxy—are already known to be excellent targets for dark matter searches, and indeed, they are constantly scrutinized by current gamma-ray experiments in the search for dark matter signals. Lighter subhalos not massive enough to have a visible counterpart of stars and gas may be good targets as well, given their typical abundances and distances. In addition, the clumpy distribution of subhalos residing in larger halos may boost the dark matter signals considerably. In an era in which gamma-ray experiments possess, for the first time, the exciting potential to put to test the preferred dark matter particle theories, a profound knowledge of dark matter astrophysical targets and scenarios is mandatory should we aim for accurate predictions of dark matter-induced fluxes for investing significant telescope observing time on selected targets and for deriving robust conclusions from our dark matter search efforts. In this regard, a precise characterization of the statistical and structural properties of subhalos becomes critical. In this Special Issue, we aim to summarize where we stand today on our knowledge of the different aspects of the dark matter halo substructure; to identify what are the remaining big questions, and how we could address these; and, by doing so, to find new avenues for research.

Radiation Tolerant Electronics

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ISBN: 9783039212798 9783039212804 Year: Pages: 210 DOI: 10.3390/books978-3-03921-280-4 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering --- Electrical and Nuclear Engineering
Added to DOAB on : 2019-12-09 11:49:15
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Research on radiation-tolerant electronics has increased rapidly over the past few years, resulting in many interesting approaches to modeling radiation effects and designing radiation-hardened integrated circuits and embedded systems. This research is strongly driven by the growing need for radiation-hardened electronics for space applications, high-energy physics experiments such as those on the Large Hadron Collider at CERN, and many terrestrial nuclear applications including nuclear energy and nuclear safety. With the progressive scaling of integrated circuit technologies and the growing complexity of electronic systems, their susceptibility to ionizing radiation has raised many exciting challenges, which are expected to drive research in the coming decade. In this book we highlight recent breakthroughs in the study of radiation effects in advanced semiconductor devices, as well as in high-performance analog, mixed signal, RF, and digital integrated circuits. We also focus on advances in embedded radiation hardening in both FPGA and microcontroller systems and apply radiation-hardened embedded systems for cryptography and image processing, targeting space applications.

Keywords

physical unclonable function --- FPGA --- total ionizing dose --- Co-60 gamma radiation --- ring-oscillator --- Image processing --- line buffer --- SRAM-based FPGA --- single event upset (SEU) --- configuration memory --- soft error --- radiation-hardened --- instrumentation amplifier --- sensor readout IC --- total ionizing dose --- nuclear fusion --- radiation hardening --- hardening by design --- TMR --- selective hardening --- VHDL --- FPGA --- radiation hardening --- single event upsets --- heavy ions --- error rates --- single-event upsets (SEUs) --- digital integrated circuits --- triple modular redundancy (TMR) --- radiation hardening by design --- TMR --- FMR --- 4MR --- triplex–duplex --- FPGA-based digital controller --- radiation tolerant --- single event effects --- proton irradiation --- RFIC --- SEE testing --- space application --- CMOS --- TDC --- radiation effects --- total ionizing dose (TID) --- single-shot --- PLL --- ring oscillator --- analog single-event transient (ASET) --- bandgap voltage reference (BGR) --- CMOS analog integrated circuits --- gamma-rays --- heavy-ions --- ionization --- protons --- radiation hardening by design (RHBD) --- reference circuits --- single-event effects (SEE) --- space electronics --- total ionization dose (TID) --- voltage reference --- X-rays --- radiation-hardened --- single event gate rupture (SEGR) --- SEB --- power MOSFETs --- Single-Event Upsets (SEUs) --- radiation effects --- Ring Oscillators --- Impulse Sensitive Function --- Radiation Hardening by Design --- fault tolerance --- single event upset --- proton irradiation effects --- neutron irradiation effects --- soft errors --- saturation effect --- gain degradation --- total ionizing dose --- gamma ray --- bipolar transistor --- single event transient (SET) --- single event opset (SEU) --- radiation-hardening-by-design (RHBD) --- frequency synthesizers --- voltage controlled oscillator (VCO) --- frequency divider by two --- CMOS --- n/a

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